The Polygon network has a lot of potential, same with projects like Avalanche and Polkadot, they're all at a discount currently. As mentioned before bitcoin and eth are always good to have imho, especially btc.
From what you're suggesting it only points to Bitcoin, it means the others won't be good if Bitcoin continues to be as bad as it is now, so why are you suggesting Polygon, Avalanche, Polkadot and Ethereum ? If indeed in the end it is for Bitcoin.